#include "oled.h"
#include "stdlib.h"
#include "oledfont.h"  	 
#include "time.h"
#include "string.h"
//OLED的显存
//存放格式如下.
//[0]0 1 2 3 ... 127	
//[1]0 1 2 3 ... 127	
//[2]0 1 2 3 ... 127	
//[3]0 1 2 3 ... 127	
//[4]0 1 2 3 ... 127	
//[5]0 1 2 3 ... 127	
//[6]0 1 2 3 ... 127	
//[7]0 1 2 3 ... 127 			   
//显存膨胀
u8 display_image[128][8]={0};


//画点
//x,y:坐标
//POINT_COLOR:此点的颜色
void LCD_DrawPoint(u16 x,u16 y,u8 mode)
{
	if(mode)
   display_image[x][y/8]=display_image[x][y/8]|(1<<(y%8));
	else
	 display_image[x][y/8]=display_image[x][y/8]&(~(1<<(y%8)));
}

void LCD_DrawLine(u16 x1, u16 y1, u16 x2, u16 y2)
{
	u16 t; 
	int xerr=0,yerr=0,delta_x,delta_y,distance; 
	int incx,incy,uRow,uCol; 
	delta_x=x2-x1; //计算坐标增量 
	delta_y=y2-y1; 
	uRow=x1; 
	uCol=y1; 
	if(delta_x>0)incx=1; //设置单步方向 
	else if(delta_x==0)incx=0;//垂直线 
	else {incx=-1;delta_x=-delta_x;} 
	if(delta_y>0)incy=1; 
	else if(delta_y==0)incy=0;//水平线 
	else{incy=-1;delta_y=-delta_y;} 
	if( delta_x>delta_y)distance=delta_x; //选取基本增量坐标轴 
	else distance=delta_y; 
	for(t=0;t<=distance+1;t++ )//画线输出 
	{  
		LCD_DrawPoint(uRow,uCol,1);
		xerr+=delta_x ; 
		yerr+=delta_y ; 
		if(xerr>distance) 
		{ 
			xerr-=distance; 
			uRow+=incx; 
		} 
		if(yerr>distance) 
		{ 
			yerr-=distance; 
			uCol+=incy; 
		} 
	}  
		
}

//画矩形	  
//(x1,y1),(x2,y2):矩形的对角坐标
void LCD_DrawRectangle(u16 x1, u16 y1, u16 x2, u16 y2)
{
	LCD_DrawLine(x1,y1,x2,y1);
	LCD_DrawLine(x1,y1,x1,y2);
	LCD_DrawLine(x1,y2,x2,y2);
	LCD_DrawLine(x2,y1,x2,y2);
}

void LCD_Draw_Circle(u16 x0,u16 y0,u8 r)
{
	int a,b;
	int di;
	a=0;b=r;	  
	di=3-(r<<1);             //判断下个点位置的标志
	while(a<=b)
	{
		LCD_DrawPoint(x0+a,y0-b,1);             //5
 		LCD_DrawPoint(x0+b,y0-a,1);             //0           
		LCD_DrawPoint(x0+b,y0+a,1);             //4               
		LCD_DrawPoint(x0+a,y0+b,1);             //6 
		LCD_DrawPoint(x0-a,y0+b,1);             //1       
 		LCD_DrawPoint(x0-b,y0+a,1);             
		LCD_DrawPoint(x0-a,y0-b,1);             //2             
  		LCD_DrawPoint(x0-b,y0-a,1);             //7     	         
		a++;
		//使用Bresenham算法画圆     
		if(di<0)di +=4*a+6;	  
		else
		{
			di+=10+4*(a-b);   
			b--;
		} 						    
	}
} 


void display(void)
{
	u8 x,i;
		
			for(i=0;i<8;i++)
	{
		   OLED_Set_Pos(0,i);
		   for(x=0;x<128;x++)
		  	OLED_WR_Byte(display_image[x][i],OLED_DATA);
	}
		
}
#if OLED_MODE==1
//向SSD1106写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(u8 dat,u8 cmd)
{
	DATAOUT(dat);	    
	if(cmd)
	  OLED_DC_Set();
	else 
	  OLED_DC_Clr();
    delay_us(2);
//	OLED_CS_Clr();
	OLED_WR_Clr();	 
	OLED_WR_Set();
//	OLED_CS_Set();
  delay_us(2);
	OLED_DC_Set();	 
} 	    	    
#else
//向SSD1106写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(u8 dat,u8 cmd)
{	
	u8 i;			  
	if(cmd)
	  OLED_DC_Set();
	else 
	  OLED_DC_Clr();
   delay_us(2);	
//	OLED_CS_Clr();
	 while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET); //?????SPI???????:????????
	 SPI_I2S_SendData(SPI1, dat);

//	for(i=0;i<8;i++)
//	{			  
//		OLED_SCLK_Clr();
//		if(dat&0x80)
//		   OLED_SDIN_Set();
//		else 
//		   OLED_SDIN_Clr();
//		OLED_SCLK_Set();
//		dat<<=1;   
//	}				 		  
//	OLED_CS_Set();
	delay_us(2);
	OLED_DC_Set();   	  
} 
#endif
	void OLED_Set_Pos(unsigned char x, unsigned char y) 
{ 
	OLED_WR_Byte(0xb0+y,OLED_CMD);
	OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD);
	OLED_WR_Byte((x&0x0f)|0x01,OLED_CMD); 
}   	  
//开启OLED显示    
void OLED_Display_On(void)
{
	OLED_WR_Byte(0X8D,OLED_CMD);  //SET DCDC命令
	OLED_WR_Byte(0X14,OLED_CMD);  //DCDC ON
	OLED_WR_Byte(0XAF,OLED_CMD);  //DISPLAY ON
}
//关闭OLED显示     
void OLED_Display_Off(void)
{
	OLED_WR_Byte(0X8D,OLED_CMD);  //SET DCDC命令
	OLED_WR_Byte(0X10,OLED_CMD);  //DCDC OFF
	OLED_WR_Byte(0XAE,OLED_CMD);  //DISPLAY OFF
}		   			 
//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!	 
void dispaly_Clear(void) 
{
	memset(display_image,0,sizeof(display_image));
}
void dispaly_fill_rect(u8 x1,u8 y1,u8 x2,u8 y2,u8 mode) 
{
	u8 i,j;
	for(i=x1;i<x2;i++)
	 for(j=y1;j<y2;j++)
	    LCD_DrawPoint(i,j,mode);
	  
}
void OLED_Clear(void)  
{  
	
	u8 i,n;		    
	for(i=0;i<8;i++)  
	{  
		OLED_WR_Byte (0xb0+i,OLED_CMD);    //设置页地址（0~7）
		OLED_WR_Byte (0x00,OLED_CMD);      //设置显示位置—列低地址
		OLED_WR_Byte (0x10,OLED_CMD);      //设置显示位置—列高地址   
		for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA); 
	} //更新显示
}


//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示				 
//size:选择字体 16/12 
void OLED_ShowChar(u8 x,u8 y,u8 chr)
{      	
	unsigned char c=0,i,j;	
		c=chr-' ';//得到偏移后的值			
		if(x>Max_Column-1){x=0;y=y+2;}
				for(i=0;i<6;i++)
		     for(j=0;j<8;j++)
		        LCD_DrawPoint(x+i,y+j,(F6x8[c][i]>>j)&1);	

}
//m^n函数
u32 oled_pow(u8 m,u8 n)
{
	u32 result=1;	 
	while(n--)result*=m;    
	return result;
}				  
//显示2个数字
//x,y :起点坐标	 
//len :数字的位数
//size:字体大小
//mode:模式	0,填充模式;1,叠加模式
//num:数值(0~4294967295);	 		  
void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size)
{         	
	u8 t,temp;
	u8 enshow=0;		
	for(t=0;t<len;t++)
	{
		temp=(num/oled_pow(10,len-t-1))%10;
	 	OLED_ShowChar(x+(size/2)*t,y,temp+'0'); 
	}
} 
//显示一个字符号串
void OLED_ShowString(u8 x,u8 y,char *chr)
{
	unsigned char j=0;
	while (chr[j]!='\0')
	{		OLED_ShowChar(x,y,chr[j]);
			x+=6;
		if(x>120){x=0;y+=2;}
			j++;
	}
}
//显示汉字
void OLED_ShowCHinese(u8 x,u8 y,u8 no)
{      			    
	u8 t,adder=0;
	OLED_Set_Pos(x,y);	
    for(t=0;t<16;t++)
		{
				OLED_WR_Byte(Hzk[2*no][t],OLED_DATA);
				adder+=1;
     }	
		OLED_Set_Pos(x,y+1);	
    for(t=0;t<16;t++)
			{	
				OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA);
				adder+=1;
      }					
}
/***********功能描述：显示显示BMP图片128×64起始点坐标(x,y),x的范围0～127，y为页的范围0～7*****************/
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[])
{ 	
 unsigned int j=0;
 unsigned char x,y;
  
  if(y1%8==0) y=y1/8;      
  else y=y1/8+1;
	for(y=y0;y<y1;y++)
	{
		OLED_Set_Pos(x0,y);
    for(x=x0;x<x1;x++)
	    {      
	    	OLED_WR_Byte(BMP[j++],OLED_DATA);	    	
	    }
	}
} 


//初始化SSD1306					    
void OLED_Init(void)
{ 	
 
 	 
 	GPIO_InitTypeDef  GPIO_InitStructure;
 	 SPI_InitTypeDef  SPI_InitStructure;
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);	 //使能A端口时钟
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_6;	 
 	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; 		 //推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//速度50MHz
 	GPIO_Init(GPIOA, &GPIO_InitStructure);	  //初始化GPIOD3,6
 	GPIO_SetBits(GPIOA,GPIO_Pin_6|GPIO_Pin_4);	
//	
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);	 //使能A端口时钟
	GPIO_InitStructure.GPIO_Pin =GPIO_Pin_2	; 
 	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; 		 //推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//速度50MHz
 	GPIO_Init(GPIOB, &GPIO_InitStructure);	  //初始化GPIOD3,6
 	GPIO_SetBits(GPIOB,GPIO_Pin_2);	

RCC_APB2PeriphClockCmd(	RCC_APB2Periph_GPIOA|RCC_APB2Periph_SPI1|RCC_APB2Periph_AFIO, ENABLE );	
 
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 |  GPIO_Pin_7;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);

 	GPIO_SetBits(GPIOA,GPIO_Pin_5|GPIO_Pin_7);
	
	
	SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx ;  
	SPI_InitStructure.SPI_Mode = SPI_Mode_Master;		
	SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;	
	SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low ;		
	SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;	
	SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;		
	SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;	
	SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;	
	SPI_InitStructure.SPI_CRCPolynomial = 7;	
	SPI_Init(SPI1, &SPI_InitStructure);  
 
	SPI_Cmd(SPI1, ENABLE); 

 
  OLED_RST_Set();
	delay_ms(100);
	OLED_RST_Clr();
	delay_ms(100);
	OLED_RST_Set(); 
					  
	OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panel
	OLED_WR_Byte(0x00,OLED_CMD);//---set low column address
	OLED_WR_Byte(0x10,OLED_CMD);//---set high column address
	OLED_WR_Byte(0x40,OLED_CMD);//--set start line address  Set Mapping RAM Display Start Line (0x00~0x3F)
	OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control register
	OLED_WR_Byte(0xff,OLED_CMD); // Set SEG Output Current Brightness
	OLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping     0xa0左右反置 0xa1正常
	OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction   0xc0上下反置 0xc8正常
	OLED_WR_Byte(0xA6,OLED_CMD);//--set normal display
	OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
	OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 duty
	OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset	Shift Mapping RAM Counter (0x00~0x3F)
	OLED_WR_Byte(0x00,OLED_CMD);//-not offset
	OLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequency
	OLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/Sec
	OLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge period
	//OLED_WR_Byte(0xF0,OLED_CMD);//--set pre-charge period
	OLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
	OLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configuration
	OLED_WR_Byte(0x12,OLED_CMD);
	OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh
	OLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect Level
	OLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)
	OLED_WR_Byte(0x02,OLED_CMD);//
	OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable
	OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disable
	OLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5)
	OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7) 
	OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
	
	OLED_WR_Byte(0xAF,OLED_CMD); /*display ON*/ 
	OLED_Clear();
	OLED_Set_Pos(0,0); 	
	//delay_ms(1500);
}  





























